Apparatus and method for measuring strain in a tensile test.

摘要

Apparatus and method for measuring strain in a tensile test.; Apparatus for measuring the tensile strain of a specimen, comprising: an articulated arm configured to attach to a test machine, wherein said articulated arm comprises at least two rigid sections (1, 2) and anchoring means (8); a guide (10) mounted on one end of the second section (2) of the articulated arm.; On said guide (10) two racks (11, 12) are mounted in a "U", where each of said racks (11, 12) carries a respective optical sensor (15, 13), each of which ( 15, 13) seats travel along said guide (10); where a specimen (17) is housed inside the "U" of said supports (11, 12), two objectives (16, 14) attachable to said probe (17), said targets (16, 14) being configured to mediate the deformation of said specimen (17) by measuring by said optical sensors (15, 13) of movement of said targets (16, 14).